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Trailer Dome Light w/ Switch - Aluminum Base - Incandescent - Round - White Lens

Trailer Dome Light w/ Switch - Aluminum Base - Incandescent - Round - White Lens

Item # IL61CB
Our Price: $12.86
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Shipping Weight: 0.28 lbs
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5-7/8" Diameter round. Incandescent trailer dome light provides bright light for an interior area. Built-in power switch. Durable aluminum base with plastic lens. Surface mount to trailer - hardware not included. 1-Wire design. (1) 1141 bulb. Great Prices for the best trailer lights from Optronics. Trailer Dome Light w/ Switch - Aluminum Base - Incandescent - Round - White Lens part number IL61CB can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (21)
  • Q & A (0)
  • Videos (2)
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  • Why etrailer?

Optronics Trailer Lights - IL61CB

  • Interior Lights
  • Utility Lights
  • Round
  • Incandescent Light
  • White
  • 5-7/8 Inch Diameter
  • Surface Mount
  • Optronics

5-7/8" Diameter round. Incandescent trailer dome light provides bright light for an interior area. Built-in power switch. Durable aluminum base with plastic lens. Surface mount to trailer - hardware not included. 1-Wire design. (1) 1141 bulb.


  • Incandescent dome light provides bright white light for an interior area
  • Built-in push-button switch controls on/off function
  • Incandescent bulb is easy to replace
  • Durable aluminum base
  • Snap-on plastic lens
  • White lens over incadescent bulb
  • Compatible with 12V DC systems
  • Surface mount to trailer - hardware not included
  • Single wire design grounds through mounting hardware


  • Dimensions: 5-7/8" diameter x 1-1/2" thick
  • Distance between mounting holes (center on center): 4-3/4"
  • Bulb type: 1141
  • Power draw at 12.8V: 0.4 amps
  • 3-Year warranty

Manufacturer Cross Reference
Light will work as an exact replacement for:
Grote # 61091
Peterson # M389S
Bargman # 30-17-501

Optronics IL61 Series Dome Light with Switch Diagram

IL61CB Optronics Trailer Interior Dome Light w/ Switch - Aluminum Base - Incandescent - Round - White Lens

Alternate part number: IL-61CB

California residents: click here

Video of Trailer Dome Light w/ Switch - Aluminum Base - Incandescent - Round - White Lens

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Optronics Trailer Dome Light with Switch Review and Installation

What's going on, everybody. Adam here with etrailer. Today, we're gonna be taking a look at the trailer dome light with a switch for your enclosed trailers. It's gonna be an interior light for your enclosed trailers. It's gonna be great for when you just need a little bit more light. It gives off a nice warm look, so it's not really a really white light.

And it isn't gonna be LED, so what we need is an incandescent bulb. This is gonna be bulb type 1141. If you already have this and you need a replacement, we have some on our website. So if it does eventually go out, you don't have to worry, etrailer takes care of you. So it's just pop on lens right here.

It's a white lens, as you can see here. So it's a nice clean look and it does have a nice aluminum frame to it. Our actual lens is gonna be about five and seven eighths inch in diameter. And it's gonna stick off your wall about an inch and a half. So if you have some two-by-fours, like we do on our wall, it's not gonna stick out any farther than that, which is always a plus.

So you're not gonna bump into it or anything like that. The mounting holes on center is gonna be about four and three quarters of an inch. And this is gonna be for your 12 volt DC systems. It's gonna pull about 0.4 amps and it is a one-wire system. What does that mean Well, if you stick around, we're gonna go ahead and install it and show you how it installs and you'll see what I'm talking about.

First thing we wanna do is figure out where we want our light. I want it right here, and then you need to run your wires. And if they're already there, great. Check that off the list. So what we're gonna need is a positive and negative wire. So what we have on our light here is just gonna be this one here, this is gonna go to positive. So once we get it to positive, what we're gonna do is, since there's only one wire, what we're gonna do is we're gonna take this little connector and go on our negative wire. And then, whenever we go ahead and mount it down, that's gonna be our ground. So let's go ahead and start with that. We'll start with the ground. I'll take it off like this. Make sure you twist these together. If you do not have these connectors at home, we do have 'em here at etrailer, so it's a one-stop shop. You don't gotta go anywhere. Just grab it when you grab your lights. Grab a tool. I wanna make sure and clamp this down, nice and tight. Just like that. All right. Give it a good tug. Make sure it's nice and snug. And then, what we can do is we will take our only wire here and it's already split for us. Pull that off, strip your other wire. Twisty, twisty. And then, I usually like to start with one side. Put it in, crimp it down just on that one side. Just like that. Give it a little pull, make sure it's nice and snug. We'll do the same exact thing with this side. All right. So now that that's done, make sure it's nice and tight again. It's always smart to triple check your connections. Just like that, I gave it a tug. It wasn't perfectly snug. So I'll give it another little round. Make sure it's nice and connected, so we don't have to redo this later. That's always just time consuming and just unnecessary. So put in the time now, make sure it's nice and good to go. And then we're ready to mount this to our wall. So now, what we wanna do is take our ground wire, put it on our little screw. The screws are not included, so just use a self-tapper, if you're going into the frame or whatever kind of screws you have laying around, really. Whatever's just gonna get it nice and secured down. Then, we can go ahead and fish all of our wires back in there, make it nice and tidy. Just like that. And what I'm gonna do is utilize one of the holes that we already had here. Just like that. And then you can tighten it down, especially where the ground wire is. We wanna make sure it's nice and snug. Just like that. So before we completely secure this down, it would be nice to go ahead and check to see if it works. So I'm going to flip the switch. And it works. Cool. So now, we're just gonna go ahead and complete mounting it down and we are almost done. Now, that's all mounted down. Make sure that the switch works and it does. We are ready to go. All in all, I like having a switch on a light. Whenever I turn the lights on in the enclosed trailer, a lot of these lights are just hardwired in. So they all come on. Sometimes you need a little bit more light. Sometimes you need a little bit less light. With this, depending on where you're working in and how big your trailer is, it's nice to be able to turn it on and off. One thing I don't like about it is incandescent bulbs. I'm just a big LED guy. If you're putting a lot of lights in your enclosed trailer and you're worried about how much you're gonna draw off your battery, LED's the way to go. But if that's not something you're concerned with, this is gonna do a good job for you. And that'll do it for a look at the trailer dome light with switch and I'm Adam with etrailer..

Customer Satisfaction Score:

Customer Reviews

Trailer Dome Light w/ Switch - Aluminum Base - Incandescent - Round - White Lens - IL61CB

Average Customer Rating:  4.9 out of 5 stars   (21 Customer Reviews)

5-7/8" Diameter round. Incandescent trailer dome light provides bright light for an interior area. Built-in power switch. Durable aluminum base with plastic lens. Surface mount to trailer - hardware not included. 1-Wire design. (1) 1141 bulb.


Worked perfect and arrived two days early. Perfect replacement for my leonard trailer light.


Very fast shipping. The vent cover was very easy to install and works great. Haven't installed the dome lights yet, but they are exactly what we needed. Thanks for great service!


This is the second one I installed to replace the inside fixtures of my horse trailer. It installed easily but since the holes did not exactly match my old lights, I needed to drill a couple of holes.


The lights we ordered were perfect and delivered quickly. I received email updates every step of the way. I highly recommend!


The product matched the original manufacturer's specifications. Installation was easy. Exactly what I needed to light the inside of the trailer.


Ordered 2 of these lights for a horse trailer. One for the dressing room and one for the horse section. Very easy installation and really light up the areas they are in. Better than I thought they would. Really very pleased with them and would not hesitate to buy more from here.


Our experience with etrailer has been awesome. The availability of merchandise is second to none, pricing is quite reasonable, and orders are shipped quickly. I highly recommend this company. Keep up the good work!!!


The trailer lights arrived quickly. They were a replacement for old horse trailer lights and they worked fine.


Product arrived quickly. Lights were a perfect fit and replacement for the old ones in our horse trailer. Nice and bright.


Great replacement light. Works great.


They should light up the inside of my "Toy Hauler" just fine.


The light is exactly what i needed for the replacment that i needed.



good simple light but not too bright


Found just what I needed. Good service .


Great product






See what our Experts say about this Optronics Trailer Lights

  • Adding a Battery and Wiring to a Non-Powered Trailer to Add Interior Lights to an Enclosed Trailer
    The first thing you will need is a battery and a battery box. The wiring for the light will need to be connected directly to this battery via a switch that you can get at a hardware store if the light does not already have a switch. Or you can install a new light that has a switch like the Trailer Dome Light with Switch and Aluminum Base, # IL61CB. Mount the switch in the trailer, route the wiring from the light to the switch, and then from the switch to the battery. If the light is just...
    view full answer...
  • How to Make Ground Connection on Optronics IL61CB Trailer Dome Light
    The Optronics # IL61CB dome light picks up its ground connection through the mounting hardware's connection to the metal structure of the trailer that's connected to the trailer frame. If you can't attach the lamp to metal that's in contact with the trailer's frame, you can use a jumper wire from one of the mounting screws to the trailer frame or to a metal structure of the trailer that's attached to the trailer fame. You can construct a jumper by using a length of # 16-1-1 with a ring...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jacob T
Video Edited:
Jacob T
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Updated by:
Brian T
Employee Cole B
Installed by:
Cole B
Employee Adam E
Installed by:
Adam E

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